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Finite Element Analysis of Chromium Layer for Cold Roller based on Material Properties and Mechanics Properties Juan Wang1, a, Siyu Lai2, b, Jin Zhou3, c 1College of Computer Science, China West Normal University, NanChong, China 2 Department of Medical Imaging, North Sichuan Medical College, NanChong, China 3 Materials and Metallurgy Engineering Institute, Wu Han, China awjuan0712@126.com, blsy_791211@126.com, cZZ_JJ013@126.com Keywords: finite element method, chromium plating, hardness, thickness, stress Abstract.
Table 1 Parameters for finite element model Ingot size /mm 1200×200×10 Roller size / mm D750×1500 Rolling speed /mm·s-1 3000 Roller diameter /mm 750 Layer Vickers hardness /MPa 9000, 10000, 11000 Roller Rockwell hardness /HRD 74, 78, 84 Layer thickness /μm 5, 10, 15 Number of layers 1, 2, 3 Fig. 1 Finite element model The model took various factors into account, including the gravitational boundary condition and the rolling speed, which is a dynamic rolling model, and is coincide with the actual rolling conditions.
The heat conduction coefficient between ingot and roller affected by such factors as composite of ingot, composite of roller and rolling speed, and the actual value is not easy to detect, which is ranges from 17 to 57kW / (m2·K) and is relevant to the rolling pressure.
Wear is caused by grinding from material and roller which is subject to periodic load, and mechanical fatigue will appear on surface.
Chinese Journal of Mechanical Engineering 2008, 42 (1): 190-194

In addition, these phenomena are the factors that degrade the compressive behavior of steel fiber reinforced concrete.
Mechanical properties of steel fiber Fiber Types Density (g/cm3) Length (mm) Diameter (mm) Aspect ratio (l/d) Tensile strength (MPa) Elastic modulus (GPa) Hooked Steel fiber 7.85 30 0.5 60 1,100 205 Experimental Program Test Program.
Hooked Steel fiber used in this study with length Φ0.5X30 mm and the mechanical properties are shown in Table 2.
Steel fiber reinforced concrete mix order and spicy time affect fiber balling phenomena and fresh properties.
Conclusion In this study, the mechanical properties of steel fiber reinforced high-strength concrete work performance, depending on changes in steel fiber volume fraction was evaluated and the conclusions can be summarized as follows. 1.

In this study, the basic properties of the “Hybrid Epoxy Resin Repair Agent” in which a functional adsorbent was added to an epoxy resin were grasped and verified.
Reinforced concrete structures that have deteriorated due to salt damage are treated by repairs before they affect the structural strength.
It is thought that deterioration and re-deterioration can be prevented by removing ions that are these deterioration factors. [7,8,9,10] As one countermeasure, repair materials using lithium nitrite and salt adsorbents have been developed.
Properties of epoxy resin Epoxy Resin and Repair Material.
Table 1 shows the properties of the used EP.

When cracks located at, or near, interface between materials with dissimilar material properties, the stress/strain fields ahead of crack are different from those in homogeneous materials [6].
The result shows that both mismatch ratio M and weld thickness affect the mechanical performance of weld joints significantly.
The mechanical properties of the two materials at room temperature are shown in Table 1, and the true stress-strain curves are shown in Fig. 1 [9].
Table 1 Mechanical property data of the two materials at room temperature [9] Material A508 Alloy52Mb Modulus of elasticity (E) 202410 MPa 178130 MPa Poisson’s ratio (v) 0.3 0.3 Yield stress (σy) 512MPa 495MPa Tensile strength (σb) 647MPa 644MPa Fig.1.
J-resistance curves for the 2D specimens with different strength mismatch factors M Fig.5 shows effect of in-plane constraint (crack depth a/W) on crack growth resistance of four sets of specimens under different strength mismatch levels (M=0.25, 0.973, 1 and 2).

Hybrid Aluminium Metal Matrix Composites are achieved the potential mechanical properties compared to single reinforced composite materials.
The lifespan of the materials is affected by a wide range of factors, and the composition used has a significant impact on the quality of life.
AA6061 chemical composition and mechanical properties are mentioned in Table 1&2.
The other two factors sliding distance and velocity provide less volume loss compared to load factor.
The addition of Sic and ZrO2 reinforcements are improved the mechanical and wear properties of hybrid composites.

The orthogonal tests consisting of three factors of melting lead temperature, continuous casting speed and inflation pressure at three different levels were designed to obtain arrangements of optimal process parameters that affected surface quality of bimetal casting rods in principle.
Introduction Clad materials have been developed very rapidly because of different demands of superior mechanical and thermal properties [1-4].
Orthogonal tests of three factors, three levels were designed to prepare lead clad tin composite rod of external diameter Φ12mm and inner diameter Φ8mm.
To explore the effect of technological parameters on the rod surface quality, the lead clad tin orthogonal tests in three factors and three levels were designed, three factors were melting lead temperature, air pressure and casting speed, three levels were set in each factor to quantify effect of test parameters on casting rod.
Tab. 1 Value of composite rod surface quality tested by orthogonal experiment Factor Test number Melting lead temperature / inflation pressure / Mpa Continuous casting speed / mm/min Score of surface quality 1 355 0.02 10 7 2 355 0.03 20 5 3 355 0.04 30 2 4 365 0.02 20 6 5 365 0.03 30 4 6 365 0.04 10 8 7 375 0.02 30 4 8 375 0.03 10 9 9 375 0.04 20 6 Score extreme difference of surface quality 1.33 0.67 4.67 It can be seen from the size of extreme difference that the main impact-factor of surface quality is continuous casting speed, followed by melting lead temperature, and the least is inflation pressure.

Its superior mechanical properties compared to other dental ceramics, such as higher strength and fracture toughness, which are due to the transformation toughening mechanism, are similar to that observed in quenched steel [2].
However, Y-TZP substructure lacks color properties and offers less light transmission.
One-way ANOVA of single-factor variance analysis and Turkey's multiple comparison test were conducted, α=0.05.
These were important factors for the definitive color of the restoration, and it made a perfect esthetic result.
[2] P Christel, A Meunier, M Heller, JP Torre, CN Peille, Mechanical properties and short-term in-vivo evaluation of yttrium-oxide-partially-stabilized zirconia, J Biomed Mater Res. 23 (1989) 45–61

The properties of the PA6 and CFRTP are summarized in Tables 1 and 2, respectively.
PA6 material properties.
CFRTP material properties.
These results suggest that the mechanical properties of PA6 in the cutting area when the cutting temperature reached approximately 150 °C determined the transition to the rapid phase.
These results confirm that the cutting temperature is the dominant factor affecting drill progression in the AFC drilling of PA6.

The heat is transmitted for matrix, resulting in loss of mechanical properties of the composite.
According to the authors, the increase of temperature affected the mechanical properties of these materials.
Vilar et al. [17], in your research, studied the dynamic-mechanical properties of a composite reinforced with carbon-fiber with NiTi wires.
Physico-Chemical properties The properties of the resin and NiTi wires used in the present work are shown in Table 1.
Santos, Dynamic mechanical properties study of an aeronautical composite CFRP with embedded shape memory alloys wires.

Soil stabilization is a critical technique in the geotechnical engineering discipline, whose main purpose is to enhance the mechanical properties and long-term durability of subgrade materials used in infrastructure construction.
The by-products of these chemical reactions result in enhanced compressive strength, reduced volumetric instability, and enhanced resistance to environmental factors.
Although both methods yield remarkable improvement in geotechnical properties, the second method is more effective, especially in soils with extremely poor engineering properties.
Although this concept should be approached with caution, it can serve as a preliminary indicator of the lime quantity required to treat a soil and enhance its mechanical properties [35].
Specimens should be cured at a temperature of 20°C ± 2°C with a relative humidity of at least 90%, following NF EN 13286-45 [60], to allow for the development of the desired mechanical properties.